mcelroy



(No Model.) 2 Sheets-Sheet 1. J. F. MGELRQY. STORAGE HEATER FOR STREET GARS. No. 541,871. `Patented July 2, 1895.

(No M'odel.) 2 Sheets-Sheet 2.

J. F. MGELROY. STORAGE HEATER FOR STREET GARS.

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Nimh@ raras PATENT Orinda.V

.IAMES F. MOELROY, OF ALBANY, NEV YORK, ASSIGNOR TO THE CONSOLI- DATED OAR-HEATING COMPANY, OF SAME PLACE.

STORAGE-HEATER FOR- STREETw-CARS.

SPECIFICATION forming part of Letters Patent No. 541,8 71, dated July 2, 1395.

Application flied March 13, 1893. Serial N0. 46 5,694. (N0 model.)

To a/ZZ whom it may concern:

Be it known that I, JAMES F. MCELROY, a citizen of the United States, residing in the city and county of Albany, State of New York, have invented a new and useful Storage-Heater for Street-Cars, of which the fol` lowing is a specification.

My invention relates to car-heating apparatus; and the object of myinvention is to provide a storage heater in which hot water is the heating agent and arranged in such a manner that it may be charged very quickly and the heat distributed uniformly throughout the car, and retain the heat for a considerable period of time; and also s o constructed that the, contents of the heater may y be discharged very rapidly when desired. I

accomplish this object by means of the mech'- anism illustrated in the accompanying drawings, in which- Figure 1 is a plan of a car provided with my storage heater. Fig. 2 is a section along the lines 1-1 on Fig. 1. y Fig. 3 is a detail view of the check valve V. Fig. 4 is a detail View showing the manner of connecting the drums with the pipes. Fig. 5 is a perspective view showing the radiators in section omitting the parts of the car.

Similar letters and numerals referto similar parts throughout the several views.

. Within the car A on each side thereof and about midway between its ends, I arrange the drums B, O, D and E; the drum B being slightly above the drum C on one 'side of the car, and the drum D being slightly abovethe drum E on the opposite side. Near each end of the car and on each side thereof diagonally opposite each other, I arrange four other drums F and G on one side and VH and J on the other, very similar in their relation to each other as the drums already described. Each of these drums and piping within the car are placed beneath the car seats.

Below the floor ofthe car on each side thereof `and about midway between its ends, I place the pipes 5, 6 and 5', 6, their ends adapted to be coupled with the hose at the supplying station. Near the ends of the pipes 5 and 6, I arrange the cocks 7, 8, by the operation of which the pipes 5 and 6 may be closed or opened as desired.

`The piping in the car and the drums are `connected' up in the following manner: The

`of the car by means of pipe 11, which connects with the drum D by means of pipe 12. The end of the drum opposite that entered 6o by pipe 12 is provided with pipe 13, which connects with the drum I-I. The drum His connected by suitable piping 14 with the drum J, which is connected to the drum E by means of the pipe 15. The drum E is connected by means of piping 16 with pipe 17, which passes through the floor and connects with pipes 18 and 19 extending across the car and connecting with pipes 20 and 2l, which enter the drum G, which drum is connected by means of pip- 7o ing 22 with the drum F which is connected with the drum B by means of the piping 23, the drum B being connected to the drum O by means of piping 24; the drum O being connected with piping 25 beneath the Hoor of the 75 car, which opens into piping 6 and also into .the connecting pipe 26 between pipes 5 and 6, and which contains the check valve V.

The check valve V is a hinged disk b arranged within the valve chamber a, (see Fig. 8o 3,) in such amanner that the Water in pipe 26 passing into the valve chamber a in the direction shown by the arrows, Fig. 3, will lift the disk b and pass out into pipe 5, but which will prevent the water from pipe 5 passing 85 through pipe 26 in an opposite direction to that indicated by the arrows.

At the end of the drum D with which pipe 13 communicates, I arrange the trap c, `by bending the pipe upward Within the drum, 9o as shown in Fig. 4, communicating with the drum near the top thereof. 1 also make an opening d within pipe 13 near the bottom of the drum as shown in Fig. 4. The pipe 14 at the end of the drum H is provided with asimilar trap, as is also pipe 15 at one end of the drum J, and pipe 16 at the end of the drum E, and pipe 22 at the end of drum G, and pipe 23 at the end of drum F, and pipe 24 at the end of drum D, and pipe 25 at the end of roo drum O. Thus at the end of each drum. out

, of which the water flows, in charging my heating apparatus, I arrange the construction described, which is in order to allow the air driven to the top of the drum by the infiowing Water to pass out through the opening near the top of the drum within the pipe, as shown by the arrows in Fig. 4, and at the same time to allow the water to lcirculate by passing through the opening d Within the pipe near the bottom of the drum. This allows the drums to be filled full of Water, the air which otherwise would accumulate at the top of the drum being carried away, giving place to the Water, enabling me to get a greater pressure of Water Within the pipes, and therefore more of the heating agent within the car. Thus when my apparatus has been charged with hot water, the drums are completely filled. By means of the openingd in the pipe I can drain the drum.

The operation of my apparatus is apparent. I attach pipes 5 and 6 to a hose at the supplying station. The hot Water entering the apparatus through pipe 5 passes into pipe 9. It' being impossible for it to make an exit through the pipe 26, because of the check valve V, it crosses the car through the pipes A10 and l1 and enters the drum D within the car. The drum D fills up with Water and a partofit continues to flow through pipe 18, but when the drum is filled with Water, as much flows out through pipe 13 as enters through pipe l1. The Water then passes through drums H, J, E and through pipes 16, 17, through the check valveVinto pipe 18 across the car, through the drums G, F, B,'and C and pipes 25, and out through pipe 6 which is connected with the return pipe at the station, each of the drums being com pleteiy tilled with hot Water. l

In order to put an extra pressure upon the water, I close the cock 8 inthe return pipe and continue to force the water th ro ugh the charging pipe 5, vtherebybringing the water Within the drums and piping within the car upto boiler pressure. I then close the cock 7 and break the connection at 5 and 6. The Water within the drumsand piping Will continue to circulate caused by the motion of the car. The stopping and starting of the car impart mo tion to the water Within the drums and pipes, as well as the constant motion of the car in its journey.

The supply and return pipes 5 and 6 on one side ot' the car having their counter-part in pipes 5 and 6 on the opposite side of the car; the connections are the same and therefore the car may be charged from either side.

It is impossible to change the circulation because ot the check valves V arranged in pipes 18 and 26. There is no danger of freezing in the pipes beneath the car because of th constant circulation.

When a car provided With my apparatus returns to the station to be reheated, or recharged, when the coupling is made and hot Water is forced into the pipes and drums, the contents of the pipes and drums are driven out into the station apparatus, the hot Water taking its place, and the same operation takes place in charging the car as already described.

When it is desired to empty the apparatus, 0f Water, I open the cocks, and the drums and pipes will be drained out. The openings d in the pipe at the bottom of the drum allow for the drainage of the drums.

A very important part of my invention is the arrangement of my apparatus so that it can be charged from either side.

I/Vhen it is desired to charge the drums from the side of the car opposite to that already described, the charging hose is attached to pipe 5', and the return hose to pipe 6. The water then enters through pipe 5 passing through valve 7 into pipe 18 and thence passes through pipes 19, 2O and 2l into drum G,into pipe 22 into drum F, pipe 23 intodrurn B, pipe 24 into drum C, through pipes 25, 2G, through Valve V into pipes 5, t), l0, 11 into drum D, pipe 13 into drum H, pipe lei into drum J, pipe 15 into drum E, pipe 16 into pipe 17, through valve 8 into pipe G into the return hose.

I do not limit myselt' to the exact arrangement of the pipes and drums. I have shown the drums arranged in pairs, but one drum may be used Where I have shown two, or they may be placed in different" positions from that shown.

What 1 claimas my invention', and desire to secure by Letters Patent, is-

1. In a storage heater, a drum suitably mounted, a pipe arranged to convey hot Water into said drum at one end thereof, a pipe entering said dru m at the opposite end thereof, a trap arranged'within said drum in connection with last mentioned pipe, said trap open ing into the drum near the top thereof, with an oriticein said trap near the bottom ot' said Ico drum, substantially as described and for the purpose set forth.

y 2. 'In a storage heater, one or more drums located on each side of a car suitably connected with piping, With a trap arranged in that end of each drum out of which the Water passes, about midway between the ends of the car said trap communicating With the drum near the top thereof, Witha vent Within said pipe communicating with the drum near the bottom thereof, said piping` provided With a check valve 0n cach side ot' the car constructed in Stich a manner as to permit vof the circulation of the water in but one direction, substantially as described and for the purpose set forth.

JAMES F. MCELROY. Witnesses:

EDWIN A. SMITH,

WLILIAM P. EDDY.

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